How many mm in 1 light-month?
The answer is 7.77062051136E+17.
We assume you are converting between millimetre and light month.
You can view more details on each measurement unit: mm or
light-month
The SI base unit for length is the metre.
1 metre is equal to 1000 mm, or 1.286898515425E-15 light-month.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between millimetres and light months.
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A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre, which is the International System of Units (SI) base unit of length. The millimetre is part of a metric system. A corresponding unit of area is the square millimetre and a corresponding unit of volume is the cubic millimetre.

››Definition: Light-month

A light-month (also written light month) is a unit of length. It is defined as the distance light travels in an absolute vacuum in one full month (thirty days of 86,400 seconds each) or 777,062,051,136,000 metres (~777 Tm).

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